As previously reported, Today show cohosts Matt Lauer and Savannah Guthrie asked GOP presidential front-runner Trump how he would hypothetically handle the explosions that claimed the lives of dozens.

"It's probably why I'm number one in the polls. We have to have strong borders, we have to be very vigilant and careful of who we allow into our country. Uh, I know Brussels well, and Brussels is a total mess," Trump told the NBC personalities. "I would be very, very tough on the borders and not allowing certain people into this country without absolute perfect documentation."

"I think people get afraid, and for good reasons," Sanders, 74, replied. "ISIS is a disgusting, barbaric organization. We’ve seen what they’ve done in Paris, what they’ve done in Brussels. People are afraid of an attack in the United States, but I think what we have to understand is we’re not going to undermine the Constitution of the United States of America in order to effectively destroy ISIS."

The Vermont senator added: "At the end of the day, we cannot allow the Trumps of the world to use these incidents to attack all of the Muslim people in the world. That is unfair." As he stated this, the crowd (Kimmel is based in L.A.) cheered in response. "To imply that if somebody is a Muslim they’re a terrorist, that is an outrageous statement," he concluded. "That is not what this country is about."

Sanders also joked that he and Trump weren't on speaking terms. "And I did not go to his wedding," he quipped of the viral pic of Democratic front-runner Hillary Clinton at Trump's wedding to Melania in 2005.